Slicing machine knife scraper



Dec. 31, 1935. w. H. FRYER 2,025,737

SLCING MACHINE KNIFE SCRAPER Filed Jan. 29, 1932 zsneets-sheet 1 :55:17 L: lt A INVENTOR Dec. 31, 1935. W, H, FRYER 2,025,737

SLIYGING MACHINE KNIFE SCRAPER Filed Jan. 29, 1932 2 sheets-shew 2 Patented Dec. 31, 17935 UNITED STATES HCE' SLICING MACHINE KNIFE SCRAPER- Ohio Application January29, 1932, Serial No. 589,583

1 Claim.

case relates to a scraper construction for disk knives of food slicing machines.

Theobject of the invention is to provide a novel scraper device for slicing machines.

More particularly, the object is to provide a novel adjustably and resiliently mounted scraper for a slicing machine.

Further and other objects and advantages will be hereinafter set forth in the accompanying specification and claim, and shown in the drawings, which by way of illustration show what is now considered to be the preferred embodiment of the invention.

In the drawings: n

Fig. 1 is an elevation of the slicing machine from the feeding side,

Fig. 2 is a detail plan View of one form of scraper, partly in section,

Fig. 3 is a side view of this scraper,

Fig. 4 is a section on line 4-4 of Fig. 3,

Fig. 5 is a plan view of another form of scraper,

Fig. 6 is a side view thereof, and

Fig. 7 is a top view partly sectioned of still another form of scraper.

Scrapers are used in slicing machines to clean the knife of particles of food adhering thereto during the operation of slicing an article. The operation of these machines in general is as follows:

An article to be sliced is supported on the carriage I0 which runs on guide tracks II and I2 carried by the frame I3. While the article is being held against the gage plate I4, the carriage I0 is advanced towards the disk knife I5 rotated by any suitable means, the knife cutting a slice from the article during the movement of the carriage. A cover plate I6 over the knife and rear plates and guards I1 and I8 prevent movement of the part of the article which has passed the cutting edge towards the plane of the knife during the slicing operation.

As the knife rotates in slicing an article, it picks up and carries around scraps of the article which are scraped from the knife by a scraper blade. In Figs. 1 to 4 is shown one form of scraper construction comprising a scraper blade 2D having a vertical portion 2| and extending therefrom a beveled portion 22 engaged with the knife edge for scraping particles therefrom. A screw 23 passing freely through the vertical portion 2| clamps the blade to a square stud 24 which extends through a square hole in closure plate 25 and into the socket 26 in the enlarged head of the horizontal arm of bracket 21. The lower end of stud 24, as viewed in Fig. 2 is prolarly secured to the slicing machine'.

vided with a plate 28. Between plates 25 and 28 is' located a coil spring 29 surrounding stud 24; The spring urges' the stud and the blade 'Ml carried thereby rearwardly away from the knife. A screw 30 threaded into the head 25 abuts the plate 5 28 to determine the position the scraper takes under inuence of spring 29. y

The vertical arm of bracket 21 is iixed to the frame I3 of the slicer by screws 32.

During the rotation of the disk knife, the 10A scraper just described scrapes the knife rim of all particles of food adhering thereto. Particles which do not fall free of the scraper are forced by the rotation of the knife upwardly along the bevel portion into the space between the vertical 15 portion 2| and the knife surface. The particles received in this space do not therefore force the scraper away from the knife and render it useless as would occur were the entire scraper substantially flush with the surface of the knife, as in former practice.

In Figs. 5 and 6 is shown another form of scraper in which the entire scraper bladeV 35 is beveled similarly to portion 22 of the first described form and the vertical portion omitted. The blade 35 is received between and pinned to the furcations 36 of a round member 31 threaded at its outer end. The blade 35 has a pivotal movement in either direction in its own plane limited by contact of the rear end thereof with the base of the U-shaped slot formed by the furcations 35. The member 31 passes freely through the head 39 of the bracket 40 similar to bracket 21 of the first describedr form and simi- The head. 39 of the bracket has a transverse slot in which isA located a knurled thumb nut 4I in threaded cooperation with the stem of member 31. By turning nut llI, the member 31 and the scraper blade carried thereby are adjusted relative to the surface of the knife to properly engage the knife. To lock the member 31 in adjusted position, a nut 42 is threaded onto the outer end of the member 31 and adjusted to abut the outer end face of the head 39. To hold the member 31 against rotation in the bracket, a screw lll is threaded into the head 39 and extends into a longitudinal slot 45 in the member 31. g

The disposition of the bevel scraper blade 35 relative to the knife surface issuch that particles scraped from the knife surface which do not drop down are forced outwardly along the bevel and as they accumulate do not force: the scraper away from the knife surface and out of scraping en 55 gagement therewith. The limited pivotal movement of the scraper blade 35 permits it to self aline with the knife surface which it engages and which may not be absolutely uniform along its entire circumferential length. Furthermore, by permitting pivotal action of the blade it accommodates itself to the slightly waving motion of the knife surface during rotation thereof.

In Fig. '7 is shown still another form of the invention in which the blade 50 is similar to the blade 20 of the rst form but is rigidly riveted to the round hollow stud 5I which extends into the socket 52 of the head 53 of the angular bracket 54. Inside the hollow of stud 5| is a coil spring 55 which at its lower end abuts a plate 56 impinged by the upper end of a screw 51 threaded into the head 53. A screw 58 threaded into the head 53 projects into the longitudinal slot 59 of the stud 5l to prevent rotation thereof. Spring 55 urges the scraper blade towards the knife and permits the blade to yield to the wavy movement of the knife surface during rotation. By turning screw 51, the blade 5i) may be adjusted to more or less firmly engage the knife surface.

While there has been shown and described and pointed out the fundamental novel features of the invention as applied to the several modifications it Will be understood that various omissions and substitutions and changes in the -form and details of the devices illustrated and in their operation may be made by those skilled in the art without departing from the spirit of the invention. I therefore intend to be limited only as indicated by the scope of the following claim:

In a slicing machine including a rotatable disk knife for slicing food; a scraper device comprising a thin blade for engaging the knife to remove particles therefrom, a member carrying the blade, a bracket, and means for yieldably nonrotatably and slidably supporting the member on the bracket for movement transversely to the plane of knife to' adjust the frictional engage- 20 ment between the blade and the knife edge. Y*

` WILuAM H. FRYER.. 

